CN111289409B - Device and method for detecting soil aeration condition under control condition - Google Patents
Device and method for detecting soil aeration condition under control condition Download PDFInfo
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- CN111289409B CN111289409B CN202010198250.6A CN202010198250A CN111289409B CN 111289409 B CN111289409 B CN 111289409B CN 202010198250 A CN202010198250 A CN 202010198250A CN 111289409 B CN111289409 B CN 111289409B
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- 239000002689 soil Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005273 aeration Methods 0.000 title claims description 11
- 238000009423 ventilation Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 230000008635 plant growth Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 230000004720 fertilization Effects 0.000 claims description 4
- 239000001963 growth medium Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 210000003437 trachea Anatomy 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
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- 230000007774 longterm Effects 0.000 abstract description 2
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- 239000007789 gas Substances 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 9
- 230000012010 growth Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 238000007726 management method Methods 0.000 description 3
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 2
- 241000723346 Cinnamomum camphora Species 0.000 description 2
- 235000008100 Ginkgo biloba Nutrition 0.000 description 2
- 244000194101 Ginkgo biloba Species 0.000 description 2
- 241000208682 Liquidambar Species 0.000 description 2
- 235000006552 Liquidambar styraciflua Nutrition 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 241001149649 Taxus wallichiana var. chinensis Species 0.000 description 2
- 240000000147 Torreya grandis Species 0.000 description 2
- 235000016410 Torreya grandis Nutrition 0.000 description 2
- 229960000846 camphor Drugs 0.000 description 2
- 229930008380 camphor Natural products 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000422846 Sequoiadendron giganteum Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 239000002274 desiccant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0007—Investigating dispersion of gas
- G01N2015/0015—Investigating dispersion of gas in solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Chemical & Material Sciences (AREA)
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a device and a method for detecting the soil ventilation condition under a control condition, which comprises a cultivation mechanism, a detection mechanism and a fertilizing mechanism, wherein an air balance pipe and air pipe joints are arranged, the ventilation condition of the soil on the surface of a cultivation container and at the test depth is created by pulling out sealing plugs at the openings of the air pipe joints at different positions and in different quantities, and the ventilation condition of a plant growth environment is simulated; the gas determined by the external components of the air pipe joint creates the component composition and concentration which are difficult to realize under the natural environment, enriches the gradient level of test simulation, cooperates with the work of a fertilizing mechanism, creates the perfect controllability of conditions such as soil composition and ventilation condition, realizes the effective simulation of the plant growth soil ventilation condition, has simple and convenient operation of each item, convenient data acquisition and lower cost, is beneficial to realizing long-term and fixed-point research, and can be widely applied to the application fields such as simulation and monitoring of the soil ventilation rule and the response and adaptation rule of plants to different soil ventilation conditions.
Description
Technical Field
The invention relates to the technical field of ecology, in particular to a device and a method for detecting the soil aeration condition under a control condition.
Background
The soil is an important foundation for the growth of plants, particularly trees, but in living areas, particularly urban and rural residential areas, road construction or courtyard ground hardening causes the ventilation condition of the tree soil growing in the areas to be worsened, irreversible damage is caused to the growth of the trees, the poor ventilation tolerance of different tree species is different, the trees with low respiratory oxygen consumption of roots under the same hardening conditions can grow healthily, the growth of the roots of the trees with high respiratory oxygen consumption is inhibited, and the adaptability of the tree species is determined by the interaction of the roots and the soil conditions; the method is limited to heterogeneity of tree growth conditions and complexity of soil monitoring work of big trees, and the traditional methods for sampling and determining soil porosity, arranging a carbon dioxide sensor and an air chamber device in the field and the like have important technical defects: (1) the heterogeneity of the soil ventilation condition caused by the difference of the soil background can not be eliminated, so that the uncertainty and the accuracy of the monitoring test can not be ensured; (2) the consistency of the growth conditions of different trees is difficult to guarantee, and the influence of the health condition difference of the test material on the test result cannot be eliminated; (3) the ventilation condition of the soil can not be adjusted, and the reaction of the tree growth to the poor ventilation of the soil is monitored; (4) the soil ventilation condition monitoring method is limited by technical conditions and cost control, and is difficult to realize monitoring of the soil condition in a lossless, dynamic and layered manner, so that sufficient data is difficult to accumulate to realize the mechanism explanation of key factors in the soil ventilation condition affecting the tree health, and therefore, a detection device and a detection method for the soil ventilation condition under the control condition are urgently needed to solve the problems.
Disclosure of Invention
The invention provides a device and a method for detecting the soil aeration condition under a control condition, which aim to achieve the purposes of controllable conditions, setting different test gradients, nondestructive, dynamic and layered monitoring and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a detection device for the soil ventilation condition under a control condition comprises a cultivation mechanism, a detection mechanism and a fertilizing mechanism, wherein the cultivation mechanism comprises a covered closed container for cultivating plants, an air balance pipe and an air pipe joint, at least one air balance pipe is transversely arranged in the covered closed container from top to bottom, the air pipe joints are arranged at two ends of the air balance pipe and fixed on the outer side of the wall of the covered closed container, and the air pipe joints are uniformly arranged at the top end of the cover of the covered closed container;
the detection mechanism comprises an air pipe, an air filtering and drying bottle, an air pump and a sensor group, wherein one end of the air pipe is connected with an air pipe joint at one end of the air balance pipe, the other end of the air pipe is connected with the air filtering and drying bottle, the air filtering and drying bottle is connected with an air inlet end of the air pump, an air outlet end of the air pump is connected with an air inlet of the sensor group, and an air outlet of the sensor group is connected with the air pipe joint at the other end of the air balance pipe through the air pipe;
the fertilizing mechanism comprises a watering bucket and a collecting bucket, the watering bucket is connected with an air pipe joint at the top end of the closed container with the cover through a water pipe, a water outlet is formed in the bottom end of the closed container with the cover, and the water outlet is connected with the collecting bucket through the water pipe.
Preferably, the closed container with the cover is a breathable and waterproof closed container.
Preferably, the air balance pipe is a porous pipe, and the soil air in the pipe is fully exchanged through the pores.
Preferably, the sensor group contains a data display memory inside.
Preferably, the method for detecting the soil aeration condition under the control condition comprises the following steps;
s1, assembling of the detection device: one or more layers of air balance pipes are arranged in the closed container with the cover from top to bottom, a plurality of air pipe joints are arranged at the top end of the closed container with the cover, and openings of all the air pipe joints are sealed through sealing plugs;
s2, plant cultivation: according to the ground diameter of the test plant, a hole is formed in the center of the container cover, a culture medium is filled in the container, and the test plant material is cultured from the center hole;
s3, fertilization management: dissolving fertilizer in water, filling the water bucket with the fertilizer, connecting the fertilizer with an air pipe joint at the top end of the closed container with a cover through a water conveying pipe, filling the fertilizer from the air pipe joint, and discharging excessive water from a water outlet into the collecting bucket;
s4, ventilation regulation: the ventilation conditions of the soil on the surface of the cultivation container and at the test depth are created by pulling away the sealing plugs at different positions and at different numbers of the openings of the air pipe joints, and the ventilation conditions of the plant growth environment are simulated; the gas with determined components is externally connected with the gas pipe joint, so that the component composition and concentration which are difficult to realize in the natural environment are created, and the gradient level of test simulation is enriched;
s5, gas detection: the air pipe joints at the two ends of the air balance pipe are connected through the air pipe, and the air filtering and drying bottle, the air pump and the sensor group are sequentially arranged along the air exhaust direction, so that the sufficient closure of gas sampling, measurement and supplement is realized.
Preferably, in step S1, the air pipe joint has a diameter of-mm, and the air pipe joint is connected to the air balance pipe by waterproof glue, and the top end of the lid of the closed container with the lid is perforated radially outward from the center point to fix the air pipe joint with the same diameter.
Preferably, in step S2, the covered inner side of the closed container is covered with waterproof glue and fixed on the container, and the container is physically reinforced with metal wires, and the opening of the central hole is sealed by applying waterproof glue to form a completely closed cultivation container.
Preferably, in step S3, the liquid inside the collecting barrel is filtered and then connected to the watering barrel through a pipeline, so as to realize water resource recycling.
Preferably, in step S5, the sensor group is connected to a network server to implement online monitoring.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use;
1. the air balance pipe and the air pipe joints are arranged, and the ventilation conditions of the soil on the surface of the cultivation container and at the test depth are created by pulling out the sealing plugs at the openings of the air pipe joints at different positions and in different numbers, so that the ventilation conditions of the plant growth environment are simulated; the gas determined by the external components of the air pipe joint creates the component composition and concentration which are difficult to realize under the natural environment, enriches the gradient level of test simulation, works in cooperation with a fertilizing mechanism, creates perfect controllability of conditions such as soil composition, ventilation condition and the like, and realizes effective simulation of the ventilation condition of the plant growth soil.
2. A single set of soil air online sampling and air composition measuring device can realize a plurality of soil air parameters such as soil oxygen, soil carbon dioxide, nitric oxide, nitrous oxide, ammonia gas, hydrogen sulfide and the like, and simultaneously, dynamically and high-frequency sampling and measuring can be realized.
3. The measuring device has the advantages of simple structure, simple and convenient operation of various items, convenient data acquisition and lower cost, is beneficial to realizing long-term and fixed-point research, and can be widely applied to the application fields of simulation and monitoring of soil ventilation rules and responses and adaptation rules of plants to different soil ventilation conditions, and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the structure of the detecting unit of the present invention;
FIG. 2 is a schematic plan view of the detecting unit of the present invention;
reference numbers in the figures: 1. a closed container with a cover; 2. an air balance tube; 3. a gas pipe joint; 4. an air tube; 5. an air filtration drying bottle; 6. an air pump; 7. a sensor group; 8. watering the bucket; 9. a collection barrel; 10. a water delivery pipe; 11. and a water outlet.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-2, a device for detecting the soil ventilation condition under a control condition comprises a cultivation mechanism, a detection mechanism and a fertilizing mechanism, wherein the cultivation mechanism comprises a covered closed container 1 for cultivating plants, an air balance pipe 2 and an air pipe joint 3, wherein the covered closed container 1 is an air-permeable and water-impermeable closed container, interference of external factors is reduced, and measurement accuracy is improved;
the detection mechanism comprises an air pipe 4, an air filtering and drying bottle 5, an air pump 6 and a sensor group 7, wherein one end of the air pipe 4 is connected with an air pipe connector 3 at one end of an air balance pipe 2, the other end of the air pipe 4 is connected with the air filtering and drying bottle 5, the air filtering and drying bottle 5 is filled with silica gel or a drying agent which does not influence the measured gas components, the influence of an air filtering and drying link on a test result is avoided, the air filtering and drying bottle 5 is connected with an air inlet end of the air pump 6, an air outlet end of the air pump 6 is connected with an air inlet of the sensor group 7, a data display and storage device is arranged in the sensor group 7, the data display and storage device is convenient for a user to observe, and an air outlet of the sensor group 7 is connected with the air pipe connector 3 at the other end of the air balance pipe 2 through the air pipe 4;
the fertilizing mechanism comprises a watering bucket 8 and a collecting bucket 9, the watering bucket 8 is connected with an air pipe connector 3 at the top end of the closed container 1 with the cover through a water pipe 10, a water outlet 11 is formed in the bottom end of the closed container 1 with the cover, the water outlet 11 is connected with the collecting bucket 9 through the water pipe 10, the length of the water pipe 10 is smaller than 1.5 times of the height of the closed container 1 with the cover, the volume of the watering bucket 8 is smaller than 1/3 of the volume of the closed container 1 with the cover, and the influence of a closed fertilizer and water management link on a test result can be controlled conveniently.
Preferably, the air balance pipe 2 is a porous pipeline, and the sufficient exchange of soil and air in the pipe is realized through multiple holes, so that the air of the soil around the air balance pipe 2 is convenient to control and detect, wherein holes with the diameter of 2-16 mm are radially drilled on the outer side of the air balance pipe, and 15-50 holes per decimeter are formed, so that the soil air in the balance pipe is convenient to be sufficiently balanced with the soil air, and the structure and the shape of the balance pipe are kept free from the influences of the extrusion, the leakage and the like of the culture medium.
A method for detecting the aeration condition of soil under a control condition comprises the following steps;
s1, assembling of the detection device: one or more layers of air balance pipes 2 are distributed in the closed container 1 with the cover from top to bottom, a plurality of air pipe joints 3 are arranged at the top end of the closed container 1 with the cover, and the openings of all the air pipe joints 3 are sealed through sealing plugs;
s2, plant cultivation: according to the ground diameter of the test plant, a hole is formed in the center of the container cover, a culture medium is filled in the container, and the test plant material is cultured from the center hole;
s3, fertilization management: dissolving fertilizer into water and filling the water bucket 8, connecting with the air pipe joint 3 at the top end of the closed container 1 with a cover through a water conveying pipe 10, filling from the air pipe joint 3, and discharging excessive water into the collecting bucket 9 from a water outlet 11;
s4, ventilation regulation: by pulling away the sealing plugs at the openings of the air pipe connectors 3 at different positions and in different numbers, the ventilation conditions of the soil on the surface of the cultivation container and at the test depth are created, and the ventilation conditions of the plant growth environment are simulated; the gas with determined components is externally connected with the gas pipe joint 3, so that the component composition and concentration which are difficult to realize in the natural environment are created, and the gradient level of test simulation is enriched;
s5, gas detection: the air pipe 4 is connected with the air pipe joints 3 at the two ends of the air balance pipe 2, and the air filtering and drying bottle 5, the air pump 6 and the sensor group 7 are sequentially arranged along the air pumping direction, so that the full closure of gas sampling, measurement and supplement is realized.
Further, in step S1, the aperture of the air pipe connector 3 is 2-16 mm, the air pipe connector 3 with a proper aperture can be selected according to the requirement, and the air pipe connector 3 is connected with the air balance pipe 2 through waterproof glue, so that the sealing performance of the device is improved, the top end of the cover of the closed container 1 with a cover is radially perforated outwards by a central point to fix the air pipe connector 3 with the same aperture, and convenience is brought to a user to work by opening the air pipe connectors 3 at different positions.
Further, in step S2, the inner side of the closed container 1 covered by the cover is coated with waterproof glue and fixed on the container, and the container is physically reinforced by metal wires, and the opening of the central hole is coated with waterproof glue for sealing, so as to form a completely closed cultivation container, thereby improving the detection accuracy of the device.
Preferably, in step S3, the liquid inside the collection barrel 9 is filtered and then connected to the watering barrel 8 through a pipeline, so as to realize water circulation, obtain water resource recycling and reduce cost.
Further, in step S5, the sensor group 7 is connected to the network server to realize online monitoring, the air content of the soil is measured online under the control condition, the switches of the sensor group 7 and the air pump 6 are sequentially turned on, wherein the air flow rate of the air pump is between 0.1 and 1.0 liter/minute, the measurement time can be set to 3.0 to 20.0 minutes according to the data change condition, the data of the air content is read or recorded after the data is stabilized, the air pipes 4 of the air pipe joints 3 on both sides are pulled out after the measurement is finished, and the air pipes are immediately blocked by the sealing plugs.
5 tree species of camphor, sweetgum, ginkgo biloba, taxus chinensis and torreya grandis are planted in a closed container 1 with a cover, by the method, air components of 5 tree species container seedlings of camphor, sweetgum, ginkgo biloba, taxus chinensis and torreya grandis in the soil layer under the fully sealed condition are monitored at 25cm, 35cm and 50cm, the detection time is 20 days, and the detection is shown in the following table:
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A detection device for soil aeration condition under control condition is characterized in that: the cultivation mechanism comprises a cultivation mechanism, a detection mechanism and a fertilizing mechanism, the cultivation mechanism comprises a covered closed container (1) for cultivating plants, an air balance pipe (2) and an air pipe joint (3), at least one air balance pipe (2) is transversely arranged in the covered closed container (1) from top to bottom, the air pipe joints (3) are respectively arranged at two ends of the air balance pipe (2), the air pipe joint (3) is fixed on the outer side of the wall of the covered closed container (1), and the air pipe joints (3) are uniformly arranged at the top end of the cover of the covered closed container (1);
the detection mechanism comprises an air pipe (4), an air filtering and drying bottle (5), an air pump (6) and a sensor group (7), one end of the air pipe (4) is connected with an air pipe connector (3) at one end of the air balance pipe (2), the other end of the air pipe (4) is connected with the air filtering and drying bottle (5), the air filtering and drying bottle (5) is connected with an air inlet end of the air pump (6), an air outlet end of the air pump (6) is connected with an air inlet of the sensor group (7), and an air outlet of the sensor group (7) is connected with the air pipe connector (3) at the other end of the air balance pipe (2) through the air pipe (4);
fertilization mechanism is including watering bucket (8) and collecting vessel (9), watering bucket (8) link to each other through conduit (10) and trachea joint (3) on capped closed container (1) top, capped closed container (1) bottom is equipped with outlet (11), outlet (11) link to each other with collecting vessel (9) through conduit (10).
2. The apparatus for detecting soil aeration under controlled conditions of claim 1, wherein: the closed container (1) with the cover is a breathable and watertight closed container.
3. A device for detecting the aeration of soil under controlled conditions according to claim 1, wherein: the air balance pipe (2) is a porous pipeline, and the air in the pipe is fully exchanged through multiple holes.
4. The apparatus for detecting soil aeration under controlled conditions of claim 1, wherein: the sensor group (7) internally contains a data display storage.
5. A method for detecting the aeration condition of soil under a control condition is characterized by comprising the following steps: comprises the following steps;
s1, assembling of the detection device: one or more layers of air balance pipes (2) are arranged in the closed container (1) with the cover from top to bottom, a plurality of air pipe joints (3) are arranged at the top end of the closed container (1) with the cover, and the openings of all the air pipe joints (3) are sealed through sealing plugs;
s2, plant cultivation: according to the ground diameter of the test plant, a hole is formed in the center of the container cover, a culture medium is filled in the container, and the test plant material is cultured from the center hole;
s3, fertilization management: fertilizer is dissolved in water and filled in a watering bucket (8), the fertilizer is connected with an air pipe joint (3) at the top end of a closed container (1) with a cover through a water conveying pipe (10) and is poured in from the air pipe joint (3), and redundant water is discharged from a water outlet (11) and enters the interior of a collecting bucket (9);
s4, ventilation regulation: the ventilation conditions of the soil on the surface of the cultivation container and at the test depth are created by pulling out the sealing plugs at the openings of the air pipe joints (3) at different positions and in different quantities, and the ventilation conditions of the plant growth environment are simulated; the gas with determined components is externally connected with the gas pipe connector (3), so that component composition and concentration which are difficult to realize in a natural environment are created, and the gradient level of test simulation is enriched;
s5, gas detection: the air pipe connectors (3) at the two ends of the air balance pipe (2) are connected through the air pipe (4), and the air filtering and drying bottle (5), the air pump (6) and the sensor group (7) are sequentially arranged along the air pumping direction, so that the sufficient closing of gas sampling, measurement and supplement is realized.
6. The method of claim 5, wherein the method comprises the steps of: in step S1, the diameter of the air pipe connector (3) is 2-16 mm, the air pipe connector (3) is connected with the air balance pipe (2) through waterproof glue, and holes are radially punched at the top end of the cover of the closed container (1) with a cover from the center point outwards to fix the air pipe connector (3) with the same diameter.
7. The method of claim 5, wherein the method comprises the steps of: in step S2, the covered inner side of the closed container (1) is covered with waterproof glue and fixed on the container, and the container is physically reinforced by metal wires, and the opening of the central hole is coated with waterproof glue for sealing, thereby forming a completely closed cultivation container.
8. The method of claim 5, wherein the method comprises the steps of: in step S3, the liquid in the collecting barrel (9) is filtered and then is connected with the watering barrel (8) through a pipeline, so that the water resource is recycled.
9. The method of claim 5, wherein the method comprises the steps of: in step S5, the sensor group (7) is connected to a network server to implement online monitoring.
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| CN85102427A (en) * | 1985-04-01 | 1986-09-24 | 吴中威 | Multipurpose water surface flower bed |
| CN101893591A (en) * | 2010-06-24 | 2010-11-24 | 浙江大学 | Electronic nose system for banana quality detection |
| CN102435481B (en) * | 2011-12-02 | 2014-06-11 | 浙江清华长三角研究院 | Pretreatment device of electronic nose for rapid detection of volatile organic compounds in environment |
| CN103814761B (en) * | 2014-03-07 | 2015-10-28 | 陈瑞文 | Create exquisite agricultural to plant and plant nature gas transmission and catch carbon and to breathe freely structure of tube body |
| CN103931428B (en) * | 2014-05-12 | 2016-04-13 | 深圳大学 | Root system of plant vent method and device |
| CN107372058B (en) * | 2017-07-11 | 2019-08-09 | 杭州万向职业技术学院 | A kind of culture apparatus of automatic water-supply home gardening cultivation |
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2020
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